Valve for controlling fluids

Abstract

A valve for controlling fluids having a piezoelectric actuator unit which has an actuator base and an actuator head that acts on a coupling module which is connected to a valve closing member that cooperates with a valve seat; the actuator base is braced via a spherical face on a conical seat of a valve housing and has an O-ring seal on its circumference. The spherical face of the actuator base is located on the side of the O-ring seal facing away from the actuator head.

1. For use in a valve for controlling fluids, a piezoelectric actuator unit which has an actuator base and an actuator head that acts on a coupling module, wherein the actuator base includes a spherical face which is braced against a conical seat of a valve housing and which actuator base has an O-ring seal on its circumference, wherein the spherical face of the actuator base is located on the side of the O-ring seal facing away from the actuator head. 
     
     
       2. The valve as recited in  claim 1 , further comprising a region of reduced diameter of the actuator base, and wherein the O-ring seal is slipped onto the region of reduced diameter. 
     
     
       3. The valve as recited in  claim 2 , wherein the O-ring seal has an inside diameter which is slightly smaller than the diameter of the region of reduced diameter of the actuator base.